On the removability of Berry's phase
- 7 September 1989
- journal article
- Published by IOP Publishing in Journal of Physics A: General Physics
- Vol. 22 (17) , 3513-3529
- https://doi.org/10.1088/0305-4470/22/17/017
Abstract
The authors present a thorough analysis of the removability of the Berry phase. They show that for any system they can, by properly restricting the parameter space turn the geometrical phase into an extra shift of the dynamical one. However, this extra shift in the dynamical phase retains its truly geometrical character. The removability is thus only apparent and the geometrical phase can still be measured in interference experiments, as indeed has already been done several times.Keywords
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